2002019947 has 2 divisors, whose sum is σ = 2002019948. Its totient is φ = 2002019946.

The previous prime is 2002019941. The next prime is 2002020029. The reversal of 2002019947 is 7499102002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2002019947 - 2¹⁹ = 2001495659 is a prime.

It is not a weakly prime, because it can be changed into another prime (2002019941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001009973 + 1001009974.

It is an arithmetic number, because the mean of its divisors is an integer number (1001009974).

Almost surely, 2^2002019947 is an apocalyptic number.

2002019947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002019947 is an equidigital number, since it uses as much as digits as its factorization.

2002019947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 2002019947 is about 44743.9375446551. The cubic root of 2002019947 is about 1260.3450694682.

The spelling of 2002019947 in words is "two billion, two million, nineteen thousand, nine hundred forty-seven".